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International Journal of Engineering and Advanced Research Technology

Volume 5 Issue 8 (August 2019)

S.No. Title & Authors Page No View
1

Title : Research on Electric Vehicle Drive Control Strategy

Authors : Jiashan Mi, Jinyu Qu, Tianmiao Zhang, Hu Mu

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Abstract :

The development of electric vehicles involves many disciplines such as mechanics, electronics, and control. Among them, vehicle control technology is a difficult problem that the automotive industry needs to overcome, and the drive control strategy is more critical. In this paper, the electric vehicle drive control strategy matching the target torque is realized by fuzzy control with the accelerator pedal opening and change rate and SOC as the main input parameters. Based on Matlab/Simlink, the corresponding simulation model is established to verify the correctness of the control strategy. The results show that the expected goal is achieved.

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2

Title : Prospects of Enhanced Oil Recovery (EOR) Application in Niger Delta Heavy Oil Field

Authors : Udechukwu Mathew C., Ekwueme Stanley T., Ubanozie Obibuike J., Okoro Chijioke I.

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Abstract :

Novel technologies have heralded the emergence of unconventional petroleum exploitation, reserves that were deemed not productive by earlier available technologies have now been exploited. Exploitation and production still goes deeper to more difficult and challenging reservoir systems as the petroleum industry transcend to mature EOR processes and advanced drilling techniques. However this methods are very costly when in comparison with exploitation and production of conventional light oil reserves such as the prevalent operation in the Niger Delta. This paper proposes methods for the exploitation of Nigeria unconventional reserves using enhanced oil recovery methods. Even though Nigeria has a large deposit of conventional reserve but the government has not made efforts to develop it as much of the emphasis has been on the conventional light crude. As oil is the main say of Nigeria economy and the conventional crude rapidly exhausting, there is urgent need for unconventional petroleum exploitation. Analysis shows that more recovery efficiency of 50% is achieved using cyclic steam injection as compared to average recovery of 42 percent realized by using in-situ combustion methods. Cyclic steam as thermal oil recovery process have been proposed here for development of the Niger Delta heavy oilfield. Furthermore, the results from the heavy oil exploitation in Nigeria have been compared with that of Venezuela and it is seen that the Niger Delta heavy oilfield holds more prospects in terms of ultimate recovery efficiencies than Venezuela. Also, it is seen that although the EOR means of exploiting these heavy oils are capital intensive and challenging but the method will be profitable as long as oil price is above $50/bbl.

6-11
3

Title : Prospects and Evaluation of Progressive Cavity Pump for Niger Delta Field Application

Authors : Udechukwu Mathew C., Ekwueme Stanley T., Ubanozie Obibuike J., Okoro Chijioke I.

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Abstract :

The recent interest in unconventional heavy oils have spurred a lot of interest. Operators seek technical and economically viable means to recover viscous petroleum reserves. Although this has been challenging but recent advancements in drilling and enhanced oil recovery methods have made it possible. The prevalent activity in the Niger delta have been primary and secondary production of the light conventional reserves. Gas lift have generally been applied when the oil that flows to the wellbore lacks sufficient energy to flow to the surface. The choice of gas lift was greatly aided by the availability of large volumes of associated gas coming out from the oil which is notable with Niger Delta ‘foamy’ crudes. However gas lift may be threatened by the increased utilization of gas for other applications due to the emergence of gas monetisation technologies. Furthermore, gas lift will not be practicable in lifting heavy oils from Niger Delta heavy oilfield. Other artificial lift methods such as progressive cavity pumps have been considered. The ability to handle viscous crudes makes progressive cavity pumps (PCP) important in heavy oilfields. Aside that, its lower cost makes it a better alternative when compared to gas lift or electric submersible pumps especially in marginal fields where flowrate are comparatively low and in crudes with high sand contents. In this work progressive cavity pump is analyzed in terms of its technical and economic performance. Production data have been gotten and analyzed with regard to the Niger Delta operating conditions, the results show that PCP pumps hold great potentials for application in the development of the Niger delta heavy oilfield.

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4

Title : Prospects of Hydraulic Fracturing For Recovery of Niger Delta Shale Formation

Authors : Udechukwu Mathew C., Ekwueme Stanley T., Ubanozie Obibuike J., Okoro, Chijioke I.

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Abstract :

There is now a global interest in unconventional petroleum exploitation. This of course is to meet up with the demand for energy by the growing world population. Conventional petroleum reserves although cheaper to exploit and produce are no longer sufficient to meet up with this demands. Newer pools of conventional reserves are seldom discovered and some petroleum analysts are beginning to say that the age of ‘cheap’ oil has passed. Unconventional petroleum reserves which includes shale gas, shale oil, tar sands, oil sands, heavy oils and bitumens etc. hold great potentials for exploitation. Nigeria needs to diversify in the energy sector. This diversification entails moving beyond conventional petroleum production. Since the Nigerian economy enormously depend on crude oil, conventional reserves may not be sufficient to meet up with growing demands and national needs. For this reason and more the Nigeria government must veer to exploitation the vast unconventional reserves in the country. Virtually all of the unconventional petroleum exist in Nigeria which include, heavy oils, bitumen, tar sands, shale oil/gas, tight gas etc. among these shale gas has received rapid global attention since the United States began the massive development of its shale. Since then other countries have followed suit leaving Nigeria behind. This paper evaluates the method to develop and exploit shale reservoirs using hydraulic fracturing methods. The various approaches, prospects and limitation of the hydraulic fracturing technology is discussed and analyzed. The results when a viscous oil reservoir was produced shows that more oil is recovered from hydraulically fractured reservoirs than reservoirs flowing without hydraulic fracture.

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5

Title : Substrate Material Optimization for Bowtie Antenna for High Frequency Applications

Authors : Parveen Kour, Harish Kumar, Saleem Khan

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Abstract :

The research work is carried out to optimize the substrate material of high frequency antenna design and simulation. Three different high-k substrate materials were consider for the design process. 2mm thick arlon, roger, and Al2O3 material were taken as the substrate for the bowties antenna. The designed antenna were analysed in frequency domain in the range of 26 GHz to 40 GHz. S-parameter and directivity were analysed for Ka band application.

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